Subject: Re: rough SA patch (works on SMP)
To: Nathan J. Williams <>
From: Ron Roskens <>
List: tech-kern
Date: 06/24/2003 11:07:33
On Tue, 24 Jun 2003, Nathan J. Williams wrote:

> Greywolf <> writes:
> > Opinion survey:  Would dump(8) benefit from SA/LWP?
> Remember that SA/LWP is just a particular implementation of
> threads. Don't think about the SA/LWP stuff so much if you're writing
> a program; think about the threads, and the places where there's
> concurrency to be had. The dump(8) program is mostly about sucking
> data off of a filesystem and onto something else, and the kernel's
> own I/O concurrency is sufficent for it, I think. Threads might be
> useful if, for some reason, you wanted a single invocation of the
> dump(8) program to dump multiple filesystems to multiple targets at
> the same time.... but since you can do that with multiple standard
> dump(8) processes, I don't think there's a benefit to that compexity.

So a program like syslogd might benefit from threads, since it has
multiple inputs and multiple outputs?